对称直线的求法涵盖了多种轴对称图形的性质,如线段的中点、角平分线的性质,以及点到直线的距离等多个知识点。对称直线的求法是高考的重点和难点,近年来,多次出现在高考试题中,而学生如果不选择适当的方法很难正确求出。笔者归纳了对称直 Symmetrical straight line method to cover a variety of axisymmetric graphics properties, such as the midpoint of the line, the nature of angle bisector, and the point-to-line distance and other knowledge points. Symmetrical straight line is the college entrance examination of the key and difficult, in recent years, many times in the entrance examination papers, and students do not choose the right method is difficult to find the correct. The author summed up the symmetry straight